You put down the back seat and lift open the trunk lid for fresh air. Raise the carpet off the inside of the trunk close to the back seat. You should see a trap door. Lift it and there is your fuel tank and pump. I can also vouch that on my 2002 Impala LS, the fuel pump is accessible through a removable panel in the trunk. If you're lucky enough to have an Impala model that has the fold-down rear seats it is simple to determine if you have the removable panel. Simply fold down your rear seats. Next, from inside the car, carefully pull back the trunk liner by slipping it out from under the folded down rear seats. The liner has an overlap near the center of the trunk running backwards toward the spare tire well. The liner overlap is held down by a few dabs of sticky glue. After pulling back the trunk liner, if you see a metal panel that is attached by some nuts, then you are really in luck. Remove the nuts and pry the metal panel up by using a flathead screwdriver or similar device. The panel is also held down by some sticky glue, so pry slowly and carefully by making several passes around the panel so you don't bend it. And viola, the fuel pump is right there! Here is a set of 13 short video clips that generically describe how to replace a fuel pump. http://www.wonderhowto.com/how-to/video/how-to-repair-or-replace-a-fuel-pump-226058/
It has a electric pump inside of the fuel tank.
The 2002 Chevy Impala throttle position sensor can be found on the top of the engine. The throttle position sensor will be near the injector fuel pump.
The fuel sending unit is part of the fuel pump module. To replace it you must drop the gas tank.
how do i replace the fuel pump and the tools i will need
Blown fuse, defective fuel pump relay, clogged fuel filter, or defective fuel pump.
It is on the frame on the driver's side just forward of the gas tank.
Remove fuel tank for access
You have to drop the fuel tank to access the pump.
Yes you do , It is inside the fuel tank
In the fuel tank
The 2003 Impala has a 17 gallon fuel tank
In the fuel tank...